William



(No Model.)

W. C. MGCLAY.

PUMP.

Patented Apr. Z1, 1885.

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PUMP.

SPECIFICATION forming part of Letters Patent No. 316,049, dated April 21, 1885.

Application tiled December 1, 1884. (No model.)

To all whom it may concern.-

Beit known that I, WILLIAM C. MoOLAY, of Santa Ana, county of Los Angeles and-State of California, have invented an Improvement in Pumps; and I hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to the class of pumps, and particularly to that class in which such an arrangement of several pumps is made that the work of one has a tendency to relieve that of the other by reason of effecting a balance between them.

Myinvention consists, primarily, .in a pump having a stationary piston and a reciprocating cylinder provided with suitable valves and a discharge-pipe; and it consists, further, in the arrangement of two pumps of this character in a manner which will enable one to balance the other, so that the power necessary for operating them is reduced to a minimum.

The object of my invention is to provide a simple and easy-acting pump.

Referring to the accompanying drawing, the figure is a front elevation of my pump, a portion of the cylinders and discharge-pipes being broken away to show the valves.

A is a frame, above which in suitable bearings is a shaft, B, having a crank, C, at one .end by which it is rotated. This shaft is provided with two cranks, D, extending in opposite directions, and from these cranks depend the hangers E, by which the pump-cylinders F are suspended. These cylinders have at their bases the suction-pipes G, at the tops of which arethe upwardly-openingsuction-valves I-I. Opening out of the cylinders are the discharge-pipes I, in which, near their bases, are the upwardlyopening discharge valves J. Embracing the tops of the cylinders and the bodies of the discharge-pipes, and extending between them, are straps K, to the centers of which the hangers E are-attached, whereby the cylinders and pipes are suspended. The pistons L which fit the cylinders have pistonrods Z, which are secured to and are suspended from the top rail of the frame A. The pistons are therefore stationary, while, by the revolution of the crank-shaft B, the cylinders F move up and down, and by reason of the opposite extension of the cranks D this movement of tons reciprocating, as is usually the case, the

cylinders move up and down. The advantage of the arrangement of the pumps as here shown is as follows: The two pumps are made as nearly as possible of equal weight. The one moving down is taking in water and the one moving up is discharging it; but in the discharge-pipe of the descending pump is a column of water resting on the dischargevalve, which during the stroke more than counterbalances a column of water in the ascending discharge-pipe, which at rst was of equal weight, but which by reason of discharging grows lighter, and as the cylinders themselves are ofequal weight and are balanced on a lever-beam or a crank-shaft, as here shown, it is obvious that it will require but little exercise of power to operate the pumps, and this power is directed only to raise the water in the cylinders alternately, which will not exceed a lift of over two feet, and not necessarily that, as the pumps can be submerged when there is a sufficient amount of water.

Having thus described. my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a pump, the piston L, having rodl suspended from and held stationary by a framework, A, in combination with the cylinder F, having suction-pipe G, with valve H, the discharge-pipe I, having valve J, and a means for reciprocating said cylinder and dischargepipe, consisting ofthe crank-shaft B, supported by frame A, and the hanger E, connected with the crank-shaft and with the cylinder and pipe, substantially as herein described.

2. The stationary pistons L, the cylinders F, an-d discharge-pipes I, of two pumps provided with suction and discharge valves H J, in combination with the means by which said cylinders and discharge-pipes are simultaneously reciprocated in opposite directions, consisting of the crank-shaft B, having the oppositely-located cranks D, and the hangers E,

connected with said cranks, and with the cylinders and discharge-pipes, and the straps K, substantially as herein described.

8. The pistons L, having rods Z, the cylin- 5 ders F, having valves H, and the reciprocating discharge-pipes I, having valves J, all forming two pumps, as described, in combination with the frame A, from which the piston-rods Z are rigidly suspended, the crank-shaft B, sup- Io ported by the 1france and having the opposite cranks, D, the hangers E, suspending the cylinders and discharge -pipes from cranks D, and the straps K, all arranged and operating substantially as herein described.

In Witness whereof I have hereunto set my i 5 hand.

WILLIAM C. MCOLAY. Witnesses:

C. W. HUMPHREYS, R. F. LoTsrEIoH. 

